21093248

素因数分解:

$2^7\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{211}}^1$

素因数の和:307

約数の個数: 64

約数和(自身を含む): 46707840

約数和(自身を除く): 25614592

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 64, 71, 88, 128, 142, 176, 211, 284, 352, 422, 568, 704, 781, 844, 1136, 1408, 1562, 1688, 2272, 2321, 3124, 3376, 4544, 4642, 6248, 6752, 9088, 9284, 12496, 13504, 14981, 18568, 24992, 27008, 29962, 37136, 49984, 59924, 74272, 99968, 119848, 148544, 164791, 239696, 297088, 329582, 479392, 659164, 958784, 1318328, 1917568, 2636656, 5273312, 10546624, 21093248]

約数ペア:

[(1, 21093248), (2, 10546624), (4, 5273312), (8, 2636656), (11, 1917568), (16, 1318328), (22, 958784), (32, 659164), (44, 479392), (64, 329582), (71, 297088), (88, 239696), (128, 164791), (142, 148544), (176, 119848), (211, 99968), (284, 74272), (352, 59924), (422, 49984), (568, 37136), (704, 29962), (781, 27008), (844, 24992), (1136, 18568), (1408, 14981), (1562, 13504), (1688, 12496), (2272, 9284), (2321, 9088), (3124, 6752), (3376, 6248), (4544, 4642)]